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## 6th grade foundations (Eureka Math/EngageNY)

### Unit 1: Lesson 3

Topic C: Foundations# Converting US customary units of volume

CCSS.Math:

Sal converts between gallons, quarts, pints, cups, and fluid ounces. Created by Sal Khan.

## Want to join the conversation?

- how much is 3/4 of a gallon?(5 votes)
- That's 3 quarts because 1 quart is 1/4 of a gallon(2 votes)

- how many kilometers are in a mile?(2 votes)
- There are 1.60934 kilometers in one mile.

There are 0.621371 miles in one kilometer.(6 votes)

- How much dose 14 fluid oncese equal(5 votes)
- Does anyone here know how many fluid ounces equals 1,234,567,890 gallons?(1 vote)

- at0:52it shows that that the amount of pints you have is equal to twice as many cups, but if you are trying to work your way backwards by doing 16 divided by 2 (8) but the amount of cups you have is a odd number so how are you supposed to find out how many pints there are-? (I'm not sure if it's possible to do that so if not I just wasted like 5 mins typing this-)(3 votes)
- That’s a time you can apply your knowledge about remainders! You can use this for other numbers, but as an example let’s say you’re trying to convert 11 cups to pints. 11 ÷ 2 doesn’t come out evenly, though, so how can we communicate a quotient that isn’t a whole number?
**Remainder notation**:

11 ÷ 2 = 5R1

For this problem, it would also make practical sense to write the answer as 5 pints and 1 cup.**Fractions**:

11 ÷ 2 = 5 ½

Your answer would be 5 ½ pints.**Decimals**:

11 ÷ 2 = 5.5

Your answer would be 5.5 pints.

Does that help?(3 votes)

- How many fluid ounces are in a quart?(4 votes)
- whoa! fluid ounces? is that the same as any other "ounce" measurement?(1 vote)
- A fluid ounce is a type of measurement that is less than cups.(4 votes)

- If a man buy 8pants 4 ties and 12 dress shirt how many different ways can he wear them(4 votes)
- That has nothing to do with math. + I do not want to answer your question right because I don't want to do math now........ .' D(0 votes)

- how do you get out of this and back to lesson(2 votes)
- Or you can click the top left that says course and click whatever course you want to go in,(4 votes)

- whats 34 gallons shortend to fluid ounces(2 votes)
- You just have to multiply 34 by 128. Because 1 gallon = 128 fluid ounces.(2 votes)

- How much is 1/2 of a gallon?(1 vote)
- A large milk or juice carton is usually 1/2 of a gallon. The following are each equal to 1/2 of a gallon:

2 quarts

4 pints

8 cups

64 fluid ounces

Approximately 1.893 liters

Approximately 1,893 milliliters

115.5 cubic inches

Approximately 1/15 of a cubic foot

Have a blessed, wonderful day!(3 votes)

## Video transcript

So right here we've listed two
quantities or two fluid volumes right over here in terms
of gallons, 1 gallon and 2 gallons. And what I want to
do in this video is try to convert this quantity
of fluid, this volume of fluid, I want to convert it into
these other units within the US customary system. So I encourage you
to pause the video and first try to
do the 1 gallon. Try to convert it into quarts,
pints, cups, and fluid ounces. Well, 1 gallon is
equal to 4 quarts. So we can just multiply by 4. 1 quart is equal to 2 pints,
so we can multiply this by 2. So 4 quarts, each
of them are 2 pints. 4 times 2 gets us to 8 pints. Each pint is equal to 2
cups, so we have 8 pints. Each of them are
equal to 2 cups. We're going to have 16 cups. And then finally, if we're
converting from a cup to a fluid ounce, each
cup is 8 fluid ounces. So if we have 16 cups, it's
going to be 16 times 8. 8 times 8 is 64, and it's
going to be twice that. That's going to be
128 fluid ounces. Now, let's do the same
thing with 2 gallons. Try to convert that into quarts,
pints, cups, and fluid ounces. And I encourage you
to pause the video and try it on your own first. Well, same idea. 1 gallon is equivalent
to 4 quarts. So 2 gallons are going to be
2 times 4 quarts, or 8 quarts. quart is 2 pints. So if we want to go
from quarts to pints, we'd want to multiply by 2. So this is going to be 16 pints. And then each pint is 2 cups. So multiplying 16 of them, then
that's going to be 32 cups. And then finally,
each cup is 8 ounces. 32 times 8 is going to be? Let's see, it's going to be 256. And notice something here. When we went from 1
gallon to 2 gallons, we essentially increased the
quantity of gallons by 2, or we multiplied by 2. And you see that
across the board here as it's going from
4 quarts to 8 quarts. This is going from
8 pints to 16 pints. This is going from
16 cups to 32 cups, going from 128
fluid ounces to 256. When you increase the volume
in gallons by a factor of 2, you're, of course, going
to increase the volume in any unit you measure
it in by a factor of 2.